always too high instead of too low though. I recommend the bottom 3rd of the tv being eyelevel on your favorite couch. take into account your feet if you have recliners, nothing more annoying then having to move your feet to see your screen when ur comfy

I have wet plaster walls, the area I was looking to mount the TV was 1 1/2" of plaster and lath before hitting the stud.(I drilled a test hole) I was not comfortable with the weight having a 1 1/2" plaster spacer between the mount and the stud.

Meh, wet plaster is usually stronger compressive strength than standard drywall. Its not like thats a big TV in any way. I suspect its similar stress to most bookshelves or cabinets.

I use smaller mounts than the one you pictured for our 36 and 42" flat screens. I have a fully articulating one that looks a lot like the one you have in that picture, that is rated for 160 lbs. I'll be hanging a 70" LCD (80 lbs) from it next week, we'll see how it works :-)

I'll be hanging a 70" LCD (80 lbs) from it next week, we'll see how it works :-)

I put an 80" in my basement two weeks ago. Steps to the basement go parallel to the tv, so I wanted it as flush as possible. Looks like a picture frame from the steps. I used this mount, and modified it slightly to fit the mounting holes. http://www.amazon.com/Sanus-Systems-...ds=sanus+flush

Built an audio rack in another room, and I'm using pyramid and a disc replicator to change channels, log into DLNA, etc. It worked out nice. Ended up with 2 JBL LS328C for rears, 2 JBL LS326W's for fronts, a single HTi55 center, and a L8400P sub. Speakers are great, but the Harman 3700 receiver is not to my liking. It has some severe handshake issues with link feedback from the smart tv.

I paid $35 for a fully adjustable one at princess auto. It's a Canadian store similar to harbor freight. It comes with lag bolts for mounting to studs. I haven't put it up yet but it looks like a monkey could do it.

I am assuming here but as long as they mount to a stud and you don't over exceed the weight ratings. You should be ok.
The one I am mounting is a 32" and the mount covers from 17"-37" with a load rating not too exceed 66lbs. It's an LCD and not a plasma like you want but it weighs 20lbs.